State and problems of enterprises activity of ukrainian motor transport

В роботі приводяться результати аналізу основних тенденцій розвитку транспортного комплексу України на прикладі автомобільного транспорту.Results of progress analysis of a Ukraine transport complex of basic trends in-process on the example of motor transport are considered

A Force-Balanced Control Volume Finite Element Method for Multi-Phase Porous Media Flow Modelling

Dr D. Pavlidis would like to acknowledge the support from the following research grants: Innovate UK ‘Octopus’, EPSRC ‘Reactor Core-Structure Re-location Modelling for Severe Nuclear Accidents’) and Horizon 2020 ‘In-Vessel Melt Retention’. Funding for Dr P. Salinas from ExxonMobil is gratefully acknowledged. Dr Z. Xie is supported by EPSRC ‘Multi-Scale Exploration of Multi-phase Physics in Flows’. Part funding for Prof Jackson under the TOTAL Chairs programme at Imperial College is also acknowledged. The authors would also like to acknowledge Mr Y. Debbabi for supplying analytic solutions.Peer reviewedPublisher PD

Funktionales semantisches feld der evidentialitätsmarker im modernen Deutsch

Im Artikel werden der Versuch einer Definition der Evidentialität als lexikalische semantische Kategorie und ein kurzer Übersicht sprachlicher Ausdrücke gegeben, die als Evidentialitätsmarker im Deutschen angesehen werden könne

A force-balanced control volume finite element method for multi-phase porous media flow modelling

A novel method for simulating multi-phase flow in porous media is presented. The approach is based on a control volume finite element mixed formulation and new force-balanced finite element pairs. The novelty of the method lies in: (a) permitting both continuous and discontinuous description of pressure and saturation between elements; (b) the use of arbitrarily high-order polynomial representation for pressure and velocity and (c) the use of high-order flux-limited methods in space and to time avoid introducing non-physical oscillations while achieving high-order accuracy where and when possible. The model is initially validated for two-phase flow. Results are in good agreement with analytically obtained solutions and experimental results. The potential of this method is demonstrated by simulating flow in a realistic geometry composed of highly permeable meandering channels

Synthesis and characterization of the new high pressure phases A Cu 3 v 4O 12 (A =Gd, Tb, Er)

New ACu3V4O12 (A=Gd, Tb, Er) phases have been prepared at high pressure and high-temperature conditions (P∼8-9 GPa, T∼1000°C) in a toroid-type high pressure cell. These compounds crystallize in the cubic symmetry with a perovskite-like structure. At ambient pressure, they are paramagnetic and have activation-type conductivity. The effect of high pressure (10-50 GPa) on the electrical properties of the materials was analyzed in the temperature range from 78 to 300 K. Pressure ranges of the transition from activation type to metallic conductivity have been determined. The crystal structure of ACu3V4O12 (A=Gd, Tb, Er) was found to be stable up to 50 GPa. © 2013 Copyright Taylor and Francis Group, LLC

Thermobaric synthesis, structure, and properties of Dy x Cu 3V4O12

The perovskite-like compound Dy x Cu3V 4O12 (x = 0.67-0.75) is synthesized under high pressure (P = 4.0-9.0 GPa) and temperature (T = 1000 C). Its crystal structure is determined (Im-3 space group, Z = 2, a = 7.29348(7) Å) by means of powder X-ray diffraction. The basic lengths and bond angles are defined. It is found that the high-pressure phase of Dy x Cu3V 4O12 is characterized by metallic conductivity and paramagnetic properties. © 2013 Allerton Press, Inc

Significance of digital and numeric (prolegomena to D. V. Pivovarov's symphonica)

Foundations of a new methodology for tolerant dispute proposed by Professor D. V. Pivovarov (1943-2016) are studied in the article. The purpose of the study is to clarify the essence of the concept of "symphonica"proposed by D. V. Pivovarov as a medium in the dialogue of secular and religion scholars. A distinction between "digital"and "numerical"mathematics is made based on Pythagoras, A. Comte, I. Kant and E. Husserl's teachings. It is proved that the positivist understanding of mathematics does not imply the meaning of numbers, whereas "numerical"mathematics only provides access to the "supratemporal realm of meanings"studied by phenomenology. In the present paper D. V. Pivovarov's "symphonica"is understood as a form of "inter-phenomenology"that ensures equal access to the ultimate phenomenological grounds of religions, philosophical systems and scientific theories. © Siberian Federal University. All rights reserved

Thermal and Mechanical Characteristics of Polymer Composites Based on Epoxy Resin, Aluminium Nanopowders and Boric Acid

The epoxy polymers are characterized by low thermal stability and high flammability. Nanoparticles are considered to be effective fillers of polymer composites for improving their thermal and functional properties. In this work, the epoxy composites were prepared using epoxy resin ED-20, polyethylene polyamine as a hardener, aluminum nanopowder and boric acid fine powder as flame-retardant filler. The thermal characteristics of the obtained samples were studied using thermogravimetric analysis and differential scanning calorimetry. The mechanical characteristics of epoxy composites were also studied. It was found that an addition of all fillers enhances the thermal stability and mechanical characteristics of the epoxy composites. The best thermal stability showed the epoxy composite filled with boric acid. The highest flexural properties showed the epoxy composite based on the combination of boric acid and aluminum nanopowder

Cannabinoid CB2 Receptors in a Mouse Model of A beta Amyloidosis: Immunohistochemical Analysis and Suitability as a PET Biomarker of Neuroinflammation

In Alzheimer\u27s disease (AD), one of the early responses to A beta amyloidosis is recruitment of microglia to areas of new plaque. Microglial receptors such as cannabinoid receptor 2 (CB2) might be a suitable target for development of PET radiotracers that could serve as imaging biomarkers of A beta-induced neuroinflammation. Mouse models of amyloidosis (J20APPswe/ind and APPswe/PS1 Delta E9) were used to investigate the cellular distribution of CB2 receptors. Specificity of CB2 antibody (H60) was confirmed using J20APPswe/ind mice lacking CB2 receptors. APPswe/PS1 Delta E9 mice were used in small animal PET with a CB2-targeting radiotracer, [C-11]A836339. These studies revealed increased binding of [C-11]A836339 in amyloid-bearing mice. Specificity of the PET signal was confirmed in a blockade study with a specific CB2 antagonist, AM630. Confocal microscopy revealed that CB2-receptor immunoreactivity was associated with astroglial (GFAP) and, predominantly, microglial (CD68) markers. CB2 receptors were observed, in particular, in microglial processes forming engulfment synapses with A beta plaques. In contrast to glial cells, neuron (NeuN)-derived CB2 signal was equal between amyloid-bearing and control mice. The pattern of neuronal CB2 staining in amyloid-bearing mice was similar to that in human cases of AD. The data collected in this study indicate that A beta amyloidosis without concomitant tau pathology is sufficient to activate CB2 receptors that are suitable as an imaging biomarker of neuroinflammation. The main source of enhanced CB2 PET binding in amyloid-bearing mice is increased CB2 immunoreactivity in activated microglia. The presence of CB2 immunoreactivity in neurons does not likely contribute to the enhanced CB2 PET signal in amyloid-bearing mice due to a lack of significant neuronal loss in this model. However, significant loss of neurons as seen at late stages of AD might decrease the CB2 PET signal due to loss of neuronally-derived CB2. Thus this study in mouse models of AD indicates that a CB2-specific radiotracer can be used as a biomarker of neuroinflammation in the early preclinical stages of AD, when no significant neuronal loss has yet developed

Вплив тривалого стресу на регуляцію серцевого ритму щурів

The influence of long-lasting stress on rats’ heart rate variability, which reflects its regulation features, was estimated using electrocardiography data. The indices of correlation rhythmogram and variation pulsogram were analyzed in control and stressed animals. It was discovered that changes of studied indices depended on the duration of stress influence and could correspond to the different stages of stress-reaction of an organism. По данным электрографии оценивали влияние длительного стресса на вариабельность сердечного ритма крыс, которая отражает особенности его регуляции. Проанализированы показатели корреляционной ритмограммы и вариационной пульсограммы животных контрольной и стрессовой групп. Изменения исследуемых показателей зависели от длительности стрессового воздействия и могли соответствовать различным стадиям стресс-реакции организма.За даними електрокардіографії оцінювали вплив тривалого стресу на варіабельність серцевого ритму щурів, яка відображує особливості його регуляції. Проаналізовано показники кореляційної ритмограми та варіаційної пульсограми тварин контрольної та стресової груп. Зміни досліджених показників залежали від тривалості стресового впливу та могли відповідати різним стадіям стрес-реакції організму.